HEAD DISTRIBUTION
ENG
5
38
If out of specification Replace the valve guide.
Clearance between stem and valve guide =
C valve guide internal diameter
- D valve stem diameter
VALVES AND RELATIVE GUIDES
CONTROL
The following procedure is applied to all valves and
valves guides.
Check:
• the valves seal
In the presence of leaks of the valves seats
Check the contact surface, the seat and the width of
the valve seat.
See paragraph "5.41".
Pour clean solvent inside the inlet doors.
Check that the valves are adequately sealed.
Clearance between valve stem
and valve guide
Inlet
0.0010 ~ 0.0037 mm
(0.000039 ~ 0.00014 in)
Drain
0.025 ~ 0.052 mm
(0.00098 ~ 0.0020 in)
0
90
80
70
60
50
40
30
20
10
0.01mm 0-30mm
2
2
Measure:
• the clearance between stem and valve guide
1
1
NOTE:
There must be no leaks from the valve seat .
A
B
A
B
a
b
C
D
Содержание 2009 TREK1130
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Страница 377: ...CYLINDERS ENG CYLINDERS REMOVAL 5 51 1 1 2 3 4 4 ...
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